Volume 5, Issue 1, March 2020, Page: 15-20
Refining the Results of the Electronic Theory of Reflection of Metals
Konstantin Ludanov, Department No 5, Institute for Renewable Energy of NASU, Kiev, Ukraine
Received: May 26, 2020;       Accepted: Jun. 5, 2020;       Published: Jul. 4, 2020
DOI: 10.11648/j.wjap.20200501.12      View  84      Downloads  26
The article provides an accurate analytical approximation of the expressions of the known results of the electronic theory of reflection of metals, i.e. for the spectral and integrated reflectivity of and (Drude and Hagen-Rubens formulas, as well as the formulas of Ashkinass, Foote, Eckert and Drake, which are fragments of power series). Compact closed expressions for and are obtained, and published experimental data on the reflectivity of the polished metal surface in new coordinate systems are processed and analyzed: (ln)-2~λ and ln()-1~ T. It turned out that the experimental data on in the new coordinates clearly “lie” on the straight lines, which in the general case do not pass through the origin, which required introducing into the expression a new parameter − λо, taking into account the difference between the "optical" conductivity σо(ω) from the electrical σе, where lо constant specific to each of the metal (for example, Ag, and Al: λо>0, for Ni and W: λо= 0, for Au and Cu: λо<0). In obtaining the final formula for a new mathematical derivation scheme was used, starting with an analysis of a pair of equivalent expressions of the complex refractive index of the metal — much more justified and brief.
Electronic Theory of Reflection of Metals, Normal Spectral Reflectivity, Optical Conductivity, Approximation of Power Series, Processing of Experimental Data
To cite this article
Konstantin Ludanov, Refining the Results of the Electronic Theory of Reflection of Metals, World Journal of Applied Physics. Vol. 5, No. 1, 2020, pp. 15-20. doi: 10.11648/j.wjap.20200501.12
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DrudeP. Optics (Moscow: ONTI: 1935).
Zener C. Nature, 132, 968 (1953).
Roberts S. Electronics (translation), No. 1 (1955).
Roberts S. Physical Review, 114, No. 1 (1959).
Edwards J. Heat Transfer (Translation), No. 1 (1962).
Edwards J., de Volo. Heat Transfer (Translation), No. 3 (1965).
Handbook of heat exchangers. (M.: Energoatomizdat: 1987).
Sokolov A. V. Optical properties of metals (M: FM: 1961).
Khrustalev B. A. Radiation properties of solids. Review, IFJ, XVIII, No. 4 (1970).
Garbuni M. Physics of optical phenomena. (Moscow: Energy: 1967).
Ginzburg V. L., Motulevich G. P. Physics – Uspekhi, LV, No. 4 (1955).
Blokh A. G., Zhuravlev Yu. A., Ryzhikov L. N. Radiation heat transfer. Handbook (Moscow: Energoatomizdat: 1991).
Vinogradov V. N., Gai E. V., Rabotnov N. S. Analytical approximation of data in nuclear and neutron physics (Moscow: Energoatomizdat: 1987).
Ludanov K. I. Method of obtaining approximate formulas // «EUREKA: Physics and Engineering» (Mathematical sciences) No. 2, p. 72-78 (2018).
Emissive properties of solid materials. Directory. Ed. A. E. Sheidlin (Moscow: Energy, 1974).
Siegel R., Howell J. Heat transfer by radiation (Moscow: World: 1975).
Ludanov K. I. Closed solution of the Schmidt-Eckert problem of determining the temperature dependence of the integral reflectivity of metals in the normal direction // Abstracts at the XI School-Seminar of Academician A. I. Leontyev. (May 20-25, 2001. Sainct-Petersburg, Russia).
Helfgott, Zeits. f. Physik. 49, 555 (1928).
Novitsky L. A., Stepanov B. M. Optical properties of materials at low temperatures (Moscow: Mechanical Engineering: 1978).
Bloch A. G. Fundamentals of heat transfer by radiation (Moscow: SEI: 1962).
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